Is there a pin-compatible replacement for SMD1206-050C-24V?

Yes, SMD1206-050C-30V is a pin-compatible replacement in the same 1206 package. Other 1206 PTCs may fit but require electrical parameter verification.

What risks should I check before replacing SMD1206-050C-24V?

Key risks include changes in hold current (Ih) and trip current (It), which define the protection level. Also verify trip time and resistance to ensure they suit your application.

SMD1206-050C-24V Alternatives, Datasheet & Cross Reference | BNstar

Finding a replacement for the BNstar SMD1206-050C-24V PTC fuse involves matching its 1206 package, 0.5A hold current, and 24V rating. The best option is an upgrade path within the same series.

AI replacement insight

Package risklow

All candidates use the same 1206 package.

Electrical riskhigh

Many alternatives have a higher hold current, which alters the protection characteristics and requires re-evaluation.

Can it be replaced directly?

Yes, SMD1206-050C-30V is a strong candidate, offering a direct upgrade in voltage rating while maintaining the same form, fit, and critical protection function.

Best replacement path

The best path is upgrading to SMD1206-050C-30V from the same manufacturer, which offers a higher voltage rating with identical key parameters.

Main risk

The main risk when considering other alternatives is an increased hold current, which can compromise the intended overcurrent protection level.

Recommended alternatives

A strong alternative with a higher voltage rating (30V vs 24V) for increased design margin, while matching key protection parameters.

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Alternative comparison matrix

Feature / factor	SMD1206-050C-24V	SMD1206-050C-30V	SMD1206-075C-30V	Compatibility / risk
Package	1206	1206	1206	1206 — Identical package ensures form-fit compatibility.; SMD1206-075C-30V: Identical package ensures form-fit compatibility.
Current	0.5A	0.5A	0.75A	0.5A / 0.75A — Identical hold current maintains the designed protection level.; SMD1206-075C-30V: Higher hold current will alter the circuit's protection point.
Voltage	24V	30V	30V	30V — Higher voltage rating provides increased design margin.; SMD1206-075C-30V: Higher voltage rating provides increased design margin.
Resistance	0.80Ω	0.70Ω	-	0.70Ω — Slightly lower max post-trip resistance (R1max).

Application & sourcing insights

Questions & answers

SMD1206-050C-30V by BNstar is the best alternative. It matches the package and 0.5A hold current while offering a higher 30V rating for better voltage tolerance.